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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_WEB_UI_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_WEB_UI_H_
#include "chrome/common/extensions/chrome_manifest_url_handlers.h"
#include "components/favicon_base/favicon_callback.h"
#include "content/public/browser/web_ui_controller.h"
#include "extensions/buildflags/buildflags.h"
static_assert(BUILDFLAG(ENABLE_EXTENSIONS_CORE));
class Profile;
namespace content {
class BrowserContext;
}
namespace extensions {
class Extension;
}
namespace user_prefs {
class PrefRegistrySyncable;
}
// A collection of methods to handle Chrome URL overrides that are managed by
// extensions (such as overriding the new tab page).
// TODO(devlin): Rename this class to ExtensionURLOverrides.
class ExtensionWebUI {
public:
static const char kExtensionURLOverrides[];
static bool HandleChromeURLOverride(GURL* url,
content::BrowserContext* browser_context);
static bool HandleChromeURLOverrideReverse(
GURL* url, content::BrowserContext* browser_context);
// Returns the extension that currently controls the specified `url`, if any.
static const extensions::Extension* GetExtensionControllingURL(
const GURL& url,
content::BrowserContext* browser_context);
// Returns the number of extensions that are overriding the given `url`. Note
// that only one is *actively* overriding it; the others would take over if
// that one were to be disabled or removed.
static size_t GetNumberOfExtensionsOverridingURL(
const GURL& url,
content::BrowserContext* browser_context);
// Initialize the Chrome URL overrides. This must happen *before* any further
// calls for URL overrides!
static void InitializeChromeURLOverrides(Profile* profile);
// Validate the Chrome URL overrides, ensuring that each is valid and points
// to an existing extension. To be called once all extensions are loaded.
static void ValidateChromeURLOverrides(Profile* profile);
// Add new Chrome URL overrides. If an entry exists, it is marked as active.
// If one doesn't exist, it is added at the beginning of the list of
// overrides (meaning it has priority).
static void RegisterOrActivateChromeURLOverrides(
Profile* profile,
const extensions::URLOverrides::URLOverrideMap& overrides);
// Deactivate overrides without removing them from the list or modifying their
// positions in the list.
static void DeactivateChromeURLOverrides(
Profile* profile,
const extensions::URLOverrides::URLOverrideMap& overrides);
// Completely unregister overrides, removing them from the list.
static void UnregisterChromeURLOverrides(
Profile* profile,
const extensions::URLOverrides::URLOverrideMap& overrides);
// Called from BrowserPrefs
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
// Get the favicon for the extension by getting an icon from the manifest.
// Note. `callback` is always run asynchronously.
static void GetFaviconForURL(Profile* profile,
const GURL& page_url,
favicon_base::FaviconResultsCallback callback);
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_WEB_UI_H_
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